The massive SLJ900 tows a bridge into place, one section at a time

Updated Nov 20, 2015

Screen Shot 2015-11-13 at 11.35.06 AMThe SLJ900 is yet another modular take on bridge building.

But rather than sliding pre-built sections of bridge in from the side as is now done on many highways, this 300-foot-long machine drops sections in a straight line.

The machine uses arms that grip the beams set to support the bridge and from there, it’s a balancing act. The SLJ900 moves forward with a huge bridge section in tow and places each one before moving on to next bridge beam.

The 580-ton machine, according to the YouTube description, was designed by the Shijiazhuang Railway Design Institute of National Defense University. In the video, it’s working on a bridge from Chongqing to Wanzhou in China.

Check out the videos of the SLJ900 at work:

(Via Gizmodo)